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Liono4ka [1.6K]
3 years ago
10

( n + -2 ) x ( n - -4 ) = 27 What are the two n's?

Mathematics
2 answers:
Flauer [41]3 years ago
5 0

Simplify n + -2 to n - 2

(n - 2)(n + 4) = 27

Expand

n^2 + 4n - 2n - 8 = 27

Simplify n^2 + 4n - 2n - 8 to n^2 + 2n - 8

n^2 + 2n - 8 = 27

Move all terms to one side

n^2 + 2n - 8 - 27 = 0

Simplify n^2 + 2n - 8 - 27 to n^2 + 2n - 35

n^2 + 2n - 35 = 0

Factor n^2 + 2n - 35

(n - 5)(n + 7) = 0

Solve for n

<u>n = 5, -7</u>

storchak [24]3 years ago
5 0

Answer:

9 and 3

Step-by-step explanation:

27/3=9

There are 2 different ways to solve this equation.

Side note: subtracting a negative (4- -3) turns the equation into addition (4+3) and adding a negative (4+ -3) turns the equation into subtraction (4-3)

So the original equation: (n + -2)x(n - -4)=27

Turns into this: (n-2)x(n+4)=27

Way 1: (11-2)x(-1+4)=27

9x3=27

Way 2: (5-2)x(5+4)=27

3x9=27

Hope this helped! :)

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A department store is having a sale of 20% off of all kitchen appliances. What is the sale price for a $250 microwave?
IgorC [24]

Answer:

200

Step-by-step explanation:

The price is 100%-20%=80% of the original.

So, 250*0.8 = 200

3 0
4 years ago
A)<br>be<br>85°<br>120°<br>(2x - 10°<br>X​
Lunna [17]

Let's see what to do buddy...

_________________________________

Step (1)

We know that the sum of the interior angles of any n-sided figure is obtained from the following equation :

(n - 2) \times 180

Our figure has 5 sides ;

So , sume the interior angles of it equals :

(5 - 2) \times 180 = 3 \times 180 = 540 \\

_________________________________

Step (2)

First look at the photo which I post.

According it we have :

(180 - x) + 120 + 85 + (2x - 10) + 90 = 540 \\

2x - x + 475 - 10 = 540

x + 465 = 540

Subtract the sides of the equation minus 465 :

x = 540 - 465

x = 75

_________________________________

And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

3 0
3 years ago
eff put a small box that is 12 inches long, 8 iwide, and 4 inches tall inside a box that is20 inches long, 15 inches wide, and 9
pickupchik [31]
The small box is 384inches squared for the volume and the larger box is 2,700 inches squared so if you place the smaller box inside the larger box the room left inside the larger box would be 2,316 inches squared
6 0
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Read 2 more answers
Choose all the numbers that 810 is divisible by.
Aleks04 [339]
810/2= 405

810/3= 270

810/4= 202.5 (not this one)

810/5= 162

810/6= 135

810/7= 115.71 ( not this one)

810/8= 101.25 (not this one)

810/9= 90

810/10= 81

810/11= 73.63 (not this one)

I hope this helps you!
3 0
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Is an anole a primary consumer,secondary or third level consumer
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